2019-04-26 12:27:38 -07:00
|
|
|
/*
|
2020-03-13 04:12:52 -07:00
|
|
|
* Copyright 2013-2020 Software Radio Systems Limited
|
2014-03-03 11:09:26 -08:00
|
|
|
*
|
2019-04-26 12:27:38 -07:00
|
|
|
* This file is part of srsLTE.
|
2014-03-03 11:09:26 -08:00
|
|
|
*
|
2015-03-18 05:31:13 -07:00
|
|
|
* srsLTE is free software: you can redistribute it and/or modify
|
2015-05-08 08:05:40 -07:00
|
|
|
* it under the terms of the GNU Affero General Public License as
|
2014-03-03 11:09:26 -08:00
|
|
|
* published by the Free Software Foundation, either version 3 of
|
|
|
|
* the License, or (at your option) any later version.
|
|
|
|
*
|
2015-03-18 05:31:13 -07:00
|
|
|
* srsLTE is distributed in the hope that it will be useful,
|
2014-03-03 11:09:26 -08:00
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
2015-05-08 08:05:40 -07:00
|
|
|
* GNU Affero General Public License for more details.
|
2014-03-03 11:09:26 -08:00
|
|
|
*
|
2015-05-08 08:05:40 -07:00
|
|
|
* A copy of the GNU Affero General Public License can be found in
|
2014-03-03 11:09:26 -08:00
|
|
|
* the LICENSE file in the top-level directory of this distribution
|
|
|
|
* and at http://www.gnu.org/licenses/.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
2015-04-03 05:49:12 -07:00
|
|
|
/******************************************************************************
|
|
|
|
* File: precoding.h
|
|
|
|
*
|
|
|
|
* Description: MIMO precoding and deprecoding.
|
|
|
|
* Single antenna and tx diversity supported.
|
|
|
|
*
|
|
|
|
* Reference: 3GPP TS 36.211 version 10.0.0 Release 10 Sec. 6.3.4
|
|
|
|
*****************************************************************************/
|
|
|
|
|
2018-03-31 10:04:04 -07:00
|
|
|
#ifndef SRSLTE_PRECODING_H
|
|
|
|
#define SRSLTE_PRECODING_H
|
2014-03-03 11:09:26 -08:00
|
|
|
|
2015-03-18 05:16:28 -07:00
|
|
|
#include "srslte/config.h"
|
2017-05-18 00:48:24 -07:00
|
|
|
#include "srslte/phy/common/phy_common.h"
|
2014-06-13 04:42:29 -07:00
|
|
|
|
2014-03-03 11:09:26 -08:00
|
|
|
/** The precoder takes as input nlayers vectors "x" from the
|
|
|
|
* layer mapping and generates nports vectors "y" to be mapped onto
|
|
|
|
* resources on each of the antenna ports.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* Generates the vector "y" from the input vector "x"
|
|
|
|
*/
|
2019-12-16 07:04:22 -08:00
|
|
|
SRSLTE_API int srslte_precoding_single(cf_t* x, cf_t* y, int nof_symbols, float scaling);
|
|
|
|
|
|
|
|
SRSLTE_API int srslte_precoding_diversity(cf_t* x[SRSLTE_MAX_LAYERS],
|
|
|
|
cf_t* y[SRSLTE_MAX_PORTS],
|
|
|
|
int nof_ports,
|
|
|
|
int nof_symbols,
|
2017-11-21 01:14:09 -08:00
|
|
|
float scaling);
|
2017-03-20 16:55:16 -07:00
|
|
|
|
2019-12-16 07:04:22 -08:00
|
|
|
SRSLTE_API int srslte_precoding_cdd(cf_t* x[SRSLTE_MAX_LAYERS],
|
|
|
|
cf_t* y[SRSLTE_MAX_PORTS],
|
|
|
|
int nof_layers,
|
|
|
|
int nof_ports,
|
|
|
|
int nof_symbols,
|
2017-11-21 01:14:09 -08:00
|
|
|
float scaling);
|
2015-03-18 11:14:24 -07:00
|
|
|
|
2019-04-23 01:53:11 -07:00
|
|
|
SRSLTE_API int srslte_precoding_type(cf_t* x[SRSLTE_MAX_LAYERS],
|
|
|
|
cf_t* y[SRSLTE_MAX_PORTS],
|
|
|
|
int nof_layers,
|
|
|
|
int nof_ports,
|
|
|
|
int codebook_idx,
|
|
|
|
int nof_symbols,
|
|
|
|
float scaling,
|
|
|
|
srslte_tx_scheme_t type);
|
2014-11-13 07:14:22 -08:00
|
|
|
|
|
|
|
/* Estimates the vector "x" based on the received signal "y" and the channel estimates "h"
|
2014-03-11 11:42:51 -07:00
|
|
|
*/
|
2019-12-16 07:04:22 -08:00
|
|
|
SRSLTE_API int
|
|
|
|
srslte_predecoding_single(cf_t* y, cf_t* h, cf_t* x, float* csi, int nof_symbols, float scaling, float noise_estimate);
|
|
|
|
|
|
|
|
SRSLTE_API int srslte_predecoding_single_multi(cf_t* y[SRSLTE_MAX_PORTS],
|
|
|
|
cf_t* h[SRSLTE_MAX_PORTS],
|
|
|
|
cf_t* x,
|
|
|
|
float* csi[SRSLTE_MAX_CODEWORDS],
|
|
|
|
int nof_rxant,
|
|
|
|
int nof_symbols,
|
|
|
|
float scaling,
|
|
|
|
float noise_estimate);
|
|
|
|
|
|
|
|
SRSLTE_API int srslte_predecoding_diversity(cf_t* y,
|
|
|
|
cf_t* h[SRSLTE_MAX_PORTS],
|
|
|
|
cf_t* x[SRSLTE_MAX_LAYERS],
|
|
|
|
int nof_ports,
|
|
|
|
int nof_symbols,
|
2017-11-21 01:14:09 -08:00
|
|
|
float scaling);
|
2015-03-18 11:14:24 -07:00
|
|
|
|
2019-12-16 07:04:22 -08:00
|
|
|
SRSLTE_API int srslte_predecoding_diversity_multi(cf_t* y[SRSLTE_MAX_PORTS],
|
|
|
|
cf_t* h[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
|
|
|
|
cf_t* x[SRSLTE_MAX_LAYERS],
|
|
|
|
float* csi[SRSLTE_MAX_LAYERS],
|
|
|
|
int nof_rxant,
|
|
|
|
int nof_ports,
|
|
|
|
int nof_symbols,
|
|
|
|
float scaling);
|
2014-03-11 11:42:51 -07:00
|
|
|
|
2019-12-16 07:04:22 -08:00
|
|
|
SRSLTE_API void srslte_predecoding_set_mimo_decoder(srslte_mimo_decoder_t _mimo_decoder);
|
2017-08-17 01:17:48 -07:00
|
|
|
|
2019-04-23 01:53:11 -07:00
|
|
|
SRSLTE_API int srslte_predecoding_type(cf_t* y[SRSLTE_MAX_PORTS],
|
|
|
|
cf_t* h[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
|
|
|
|
cf_t* x[SRSLTE_MAX_LAYERS],
|
|
|
|
float* csi[SRSLTE_MAX_CODEWORDS],
|
|
|
|
int nof_rxant,
|
|
|
|
int nof_ports,
|
|
|
|
int nof_layers,
|
|
|
|
int codebook_idx,
|
|
|
|
int nof_symbols,
|
|
|
|
srslte_tx_scheme_t type,
|
|
|
|
float scaling,
|
|
|
|
float noise_estimate);
|
2017-03-24 19:51:17 -07:00
|
|
|
|
2019-12-16 07:04:22 -08:00
|
|
|
SRSLTE_API int srslte_precoding_pmi_select(cf_t* h[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
|
|
|
|
uint32_t nof_symbols,
|
|
|
|
float noise_estimate,
|
|
|
|
int nof_layers,
|
|
|
|
uint32_t* pmi,
|
|
|
|
float sinr[SRSLTE_MAX_CODEBOOKS]);
|
2017-08-03 04:56:57 -07:00
|
|
|
|
2019-12-16 07:04:22 -08:00
|
|
|
SRSLTE_API int srslte_precoding_cn(cf_t* h[SRSLTE_MAX_PORTS][SRSLTE_MAX_PORTS],
|
2017-08-29 00:59:06 -07:00
|
|
|
uint32_t nof_tx_antennas,
|
|
|
|
uint32_t nof_rx_antennas,
|
|
|
|
uint32_t nof_symbols,
|
2019-12-16 07:04:22 -08:00
|
|
|
float* cn);
|
2017-08-29 00:59:06 -07:00
|
|
|
|
2018-03-31 10:04:04 -07:00
|
|
|
#endif // SRSLTE_PRECODING_H
|